Q345 is a low-alloy steel material commonly used in motor vehicles, bridges, ships, construction and other fields. Also known as GB/T 1591, Q represents the yield point, and 345 represents the yield strength. Therefore, care must be taken that the yield value decreases with increasing material thickness. The use of Q345 carbon steel belt Q345 carbon steel strip has excellent mechanical properties, good low temperature performance, excellent weldability and plasticity. Most commonly used in building structures, low-pressure containers, cranes, mechanical parts, bridges, ships, oil storage tanks, hoisting machinery, power stations, mining machinery, general metal parts, and others exposed to -40°C or under high loads.